<template>
  <div class="login height_100p position_relative" style="background-size: cover;" :style="{'background-image':loginBg}" flex="dir:top main:center cross:center">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form width_400 background_fff padding_25 padding_bottom_0 border_radius_6">
      <h2 class="margin_bottom_30 text_align_center">智唐后台管理系统</h2>
      <!-- <h4 class="title" style="color:red;"><a href="https://item.taobao.com/item.htm?id=612412877881" target="_blank">版权所有 侵权必究 授权店铺购买源码</a></h4> -->
      <el-form-item prop="username">
        <el-input v-model="loginForm.username" type="text" auto-complete="off" placeholder="账号">
          <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item prop="code">
        <div flex="main:justify">
          <el-input
            v-model="loginForm.code"
            auto-complete="off"
            placeholder="验证码"
            style="flex:1"
            @keyup.enter.native="handleLogin"
          >
            <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
          </el-input>
          <div class="login-code">
            <img :src="codeUrl" @click="getCode">
          </div>
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button
          :loading="loading"
          size="medium"
          type="primary"
          style="width:100%;"
          @click.native.prevent="handleLogin"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer position_absolute bottom_0 text_white">
      <span>Copyright © 2019-2020 <a href="javascript:;">zhitang</a> All Rights Reserved.</span>
    </div>
  </div>
</template>

<script>
import { getCodeImg } from '@/api/login'
import Cookies from 'js-cookie'
import { encrypt, decrypt } from '@/utils/jsencrypt'

export default {
  name: 'Login',
  data() {
    return {
      loginBg: 'url(' + require('@/assets/image/login-background.jpg') + ')',
      codeUrl: '',
      cookiePassword: '',
      loginForm: {
        username: 'admin',
        password: 'admin123',
        rememberMe: false,
        code: '',
        uuid: ''
      },
      loginRules: {
        username: [
          { required: true, trigger: 'blur', message: '用户名不能为空' }
        ],
        password: [
          { required: true, trigger: 'blur', message: '密码不能为空' }
        ],
        code: [{ required: true, trigger: 'change', message: '验证码不能为空' }]
      },
      loading: false,
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  created() {
    this.getCode()
    this.getCookie()
  },
  methods: {
    getCode() {
      getCodeImg().then(res => {
        this.codeUrl = 'data:image/gif;base64,' + res.img
        this.loginForm.uuid = res.uuid
      })
    },
    getCookie() {
      const username = Cookies.get('username')
      const password = Cookies.get('password')
      const rememberMe = Cookies.get('rememberMe')
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password: password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
      }
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          if (this.loginForm.rememberMe) {
            Cookies.set('username', this.loginForm.username, { expires: 30 })
            Cookies.set('password', encrypt(this.loginForm.password), { expires: 30 })
            Cookies.set('rememberMe', this.loginForm.rememberMe, { expires: 30 })
          } else {
            Cookies.remove('username')
            Cookies.remove('password')
            Cookies.remove('rememberMe')
          }
          this.$store
            .dispatch('Login', this.loginForm)
            .then(() => {
              this.$router.push({ path: this.redirect || '/' })
            })
            .catch(() => {
              this.loading = false
              this.getCode()
            })
        }
      })
    }
  }
}
</script>

<style rel="stylesheet/scss" lang="scss">

// .login {
//   display: flex;
//   justify-content: center;
//   align-items: center;
//   height: 100%;
//   background-image: url("../assets/image/login-background.jpg");
//   background-size: cover;
// }
// .title {
//   margin: 0px auto 30px auto;
//   text-align: center;
//   color: #707070;
// }

// .login-form {
//   border-radius: 6px;
//   background: #ffffff;
//   width: 400px;
//   padding: 25px 25px 5px 25px;
//   .el-input {
//     height: 38px;
//     input {
//       height: 38px;
//     }
//   }
//   .input-icon {
//     height: 39px;
//     width: 14px;
//     margin-left: 2px;
//   }
// }
// .login-tip {
//   font-size: 13px;
//   text-align: center;
//   color: #bfbfbf;
// }
// .login-code {
//   width: 33%;
//   height: 38px;
//   float: right;
//   img {
//     cursor: pointer;
//     vertical-align: middle;
//   }
// }
// .el-login-footer {
//   height: 40px;
//   line-height: 40px;
//   position: fixed;
//   bottom: 0;
//   width: 100%;
//   text-align: center;
//   color: #fff;
//   font-family: Arial;
//   font-size: 12px;
//   letter-spacing: 1px;
// }
</style>
